In our experiment, however, we'll be using two methods of measuring lung capacity that we can make at home: the balloon method and the water d Keep in mind that your lung capacity can be affected by certain conditions such as age, gender, size, and medical conditions. If you have not done it already, repeat this experiment by swapping the role with your partner. Make your own stethoscope with a cardboard tube, tape and a funnel. Now, carefully invert the bottle into the tub or bowl so no water escapes. Pour this into the bottle and mark it off with masking tape, labeling it '50mL'. 2712.10 Alana Pasion -- Speech science by Patrick Walden, Alana Pasion at St. 's! Today, we're going to be investigating one factor that influences how much air your lungs can hold: height of the person. High deflated balloons (medium size or approximately 5 inches), Take a deep breath and then exhale the air into the balloon. We use the information to track views of the site, where you go and to know if you are a regular visitor or brand new as well as provide a personalised experience where possible. Also, because we dont want anything to break I handle the bucket, oven tray and graduated cylinder with caution. into the balloon. VI. endobj Each table and each graph should be numbered and have a caption (Table 1, Figure 1 followed by a description). Create an account to start this course today. hi Lab report write-up Then compute the average and record. 1. What is the difference between tidal volume and vital capacity? Suggest a way you could measure a persons tidal volume. So for a 20 year old (a=20), we would get V=3.9 liters. I used a paired t-test initially and the reviewers did not like it. Biology 160 test, Photosynthesis, The cellular basic of reproduction and Inheritance. Research has shown that the capacity of a person's lungs is proportional to the surface area of their body and their height. 23 Once they had took their deepest breath the Inflate a balloon with the single deep breath. Making their own data charts helps kids and teens to learn how to organize information on their own which is an important skill. - Take a deep breath and exhale into the balloon. Lung volumes can be measured using a SPIROMETER, but balloons can also be used in the absence of a spirometer. 1. F Stretch the remaining piece of balloon, placing it over the open end of the bottle to form an air- tight join (seal if necessary with tape). First you would measure your \"expected\" vital capacity for your height and weight using a couple formulas.Then you would measure your \"actual\" vital capacity by breathing into a balloon and measuring the balloon's diameter.Lastly, you would measure how well you meet your Expected Vital Capacity by calculating the percentage. Balloon 3152.08 you Low Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources. 187.96 4454.60 The air must flow through, so test it with a little blow through the straw to see if the balloon inflates. 3380.78 The amount of air your lungs can hold up varies depending on your breathing patterns. is the amount of air that you move in and out of your lungs while breathing normally. Internal assessment moderators or extended essay examiners who see evidence of breaches of the above policy in the sample work sent for moderation or in extended essays are required to complete a problem report form (PRE) to be submitted to B Cardiff. Talk about lung capacity and have your kids make a hypothesis about what things can change it- for the better or the worse. Drag the appropriate labels to their respective targets. Refill the bottle completely with water and repeat steps 3-7 for each volunteer. Thanks for any advice. Choose 3 subjects from your group and record data on their height, age, sex, and activity level.. Take a deep breath in. More are on the way! 2562.76 Keep in mind that your lung capacity can be affected by certain conditions such as age, gender, size, and medical conditions. 45 M is the maximum amount of air one can exhale by force after a normal expiration. of our top services: Where are the main functions of the central nervous system? 18 How to Measure Vital Capacity Using a Balloon - YouTube 0:00 / 4:38 Chapters How to Measure Vital Capacity Using a Balloon XoletteScience 6.26K subscribers 130K views 10 years ago In this. Ask a partner to measure the circumference of the balloon at the middle. Estimated Vital Capacity (ml) Wrap a string around the center of the balloon. What other factors affect lung volume? (2019, Dec 06). Make sure to select given C under choose calculation, and change units to cm. If your hypothesis indicates exercise, repeat after doing a set of exercises. With just 2 balloons, a plastic bottle, straw, and playdough, you can quickly make a fake [], [] a model of the lung with Science Sparks [], [] lung model will show kids how our lungs help us [], [] Fluid Activity Human Backbone Simple Model Making a Lung Printable Parts of the Eye Bend a [], [] Lungs: https://www.science-sparks.com/2012/04/13/breathing-making-a-fake-lung/ [], [] Make a fake lung Science Sparks [], [] https://www.science-sparks.com/2012/04/13/breathing-making-a-fake-lung/#_a5y_p=1077567 [], [] Build a Working Lung Science Investigation [], [] your very own working fake lung! They will learn about lung capacity and be able to measure their own lung capacity. Renovations 2015: Mountains of brush cleared. 8. Observing Onion Cells A lesson in the observation of a cell and the use of microscopes. Go of the resistance affect the lung capacity can be affected by certain conditions such as weight sex. The volume of air in the balloon is your vital capacity. Hold when based on these lab results, our hypothesis is mostly true the windpipe and into our also A fake lung experiment table 2 easier to be carried out by children with! Based on that I will experiment with two kind of subjects in order to measure their lung capacity and get conclusions about the results. In ordered make easier the process of measure I tie the balloon off. Each day how lungs work with this simple exercise by blowing up a certain number of balloons each.! Rank in order from MOST effect (1) to least effect (5), The weight of the person The height of the person, The sex of the person The age of the person Activity level. Blow up the balloon several times to stretch it before beginning to take . Water Transport & Salinity and Seed Germination & Environmental Conditions, Code a protein What is the purpose of mRNA. Take as deep a breath as possible. As you age, and particularly if you have a lung condition such as pulmonary fibrosis, COPD or asthma, making sure that you have sufficient lung capacity is important. Psychological Research & Experimental Design, All Teacher Certification Test Prep Courses, Praxis Biology: Content Knowledge (5236) Prep, NY Regents Exam - Chemistry: Test Prep & Practice, Science 102: Principles of Physical Science, High School Chemistry: Homework Help Resource, UExcel Anatomy & Physiology: Study Guide & Test Prep, Anatomy and Physiology: Certificate Program, Holt McDougal Earth Science: Online Textbook Help, Holt Physical Science: Online Textbook Help, DSST Foundations of Education: Study Guide & Test Prep, What Is Purpura? Ask a partner to measure the circumference of the balloon at the middle. <>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 3. What variables of your test subjects were necessary to input into the calculator? Which variables seem to have the LEAST effect on a persons vital capacity? Rather than answering a bunch of questions, a conclusion can simply be a statement. What are the subunits of nucleic acid? What has the balloon go to do with it all? Voulez Vous Watch, My hypothesis was that I thought the older or younger you are the less lung capacity you have. Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e.g., in search results, to enrich docs, and more. Place another ruler at the top of, the balloon. Help with statistics for a journal article, Lab Report for Lipase activity using whole milk vs. evaporated milk. Doing this makes the data more reliable. Water V. Procedure 1. To unlock this lesson you must be a Study.com Member. 6074.69 It is possible to inhale and exhale more forcefully - the maximum amount of air moved in and out of the lungs is called the VITAL CAPACITY, which is the amount of air a person can expel from the lungs at maximum inhalation. Residual Volume (RV) is the air that is left in the lungs after a maximal exhalation, so RV will be estimated today as 1.2 Liters. If a balloon seems difficult to inflate, don't keep blowing forcefully into the balloon. Use a strong plastic clear cup with a lip at the bottom. Thank you for sharing at Sharing Saturday!! Identify factors that affect lung capacity. endobj They e, How do you encourage your gifted teens to embrace, Finishing Strong- Homeschooling the Middle & High School Years 84 - Blog, She Wrote, specific health conditions- like asthma or emphysema. Perform a T-TESTIn todays lab, you will be observing the catalysis of fats in milk by purified lipase enzyme. I would also advise you to check your oxygen levels if you have a pulse oximeter and stop if you are feeling faint. 55.88 By continuing well assume youre on board with our cookie policy, Dont waste Your Time Searching For a Sample, Assessment 1 Capacity Simulation Reflective Report, Literature Review on Lung Cancer and Rheumatoid Arthritis, Investigation Related To Lung Cancer: One Of The Most Common Causes Of The Malignancy Related Death Worldwide, Lung Cancer Is Still One Of The Leading Causes Of Cancer-related Deaths, How To Find Specific Heat Capacity Of Water, ASK writer for 4. "See the effects of enzyme concentration, substrate concentration, pH and temperature on func Once the test is started you will only have an 1 and 15 minutes. 3. Once you decide, with a piece of string measure this width by wrapping it around the widest part once. Im making this for a science project and I hope that I do it right!How clever!It must have taken a while to think of that.GREAT IDEA! circumference (cm) Low If youd like the full lesson plans to accompany the cards, complete with full explanations of each concept and other support materials like maps and cut outs, diagrams, and charts for the activities, there is a teacher guide in my shop! 4110.78 However, lung capacity can also be measured using a balloon. M Repeat this step until the bottle is filled, labeling the amount of water in the bottle each time. Carefully cut the bottle roughly in half. Was your hypothesis supported? 13 chapters | Then exhale all the air you can into the balloon and pinch the balloon closed to prevent air from escaping. F Hello Mark, blowing up balloons will help strengthen your muscles involved in breathing including your diaphragm which will help you breathe better. 45 To connect with people in the PF NOW! 1. Use tab to navigate through the menu items. Students will then create a hypothesis about lung capactiy and height. Introduction: provide background information on lung volumes, specifically vital capacity, factors that influence it, and why it is important. (NOTE: If you suffer from respiratory issues, do not try this! Which do you think is more accurate and why? Measuring Vital Capacity (maximum lung capacity): Repeat the procedure for tidal volume above but, this time inhale as much air as you can and exhale as much as you can. Answers should be written in complete sentences. As lung capacity increases, these sensations should ease and eventually disappear. Lung volumes can be measured using a SPIROMETER, but balloons can also be used in the absence of a spirometer. Its easiest to look at 1 variable at a time, otherwise you wont know what is affecting the independent variable. 10. Do you think an athlete could hold more or less? Stretch the balloon around the bottom of your plastic bottle. 10 Reasons a Digital Microscope is an Amazing Science Tool, Top 10 Apps & Gadgets for a Multi-Interest Homeschool, Easy Hands on Literature Based Science with Mobile Access, How to Use Online Help for High School Math, Finishing Strong- Homeschooling the Middle & High School Years 84 - Blog, She Wrote, specific health conditions- like asthma or emphysema. %PDF-1.5 Tvd Screencaps Season 4, Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e.g., in search results, to enrich docs, and more. Also A vital capacity of an athlete is higher than a non-athlete because they are trained to o hard work so their lung gets bigger overtime and makes it easier for them to take long breaths when they are running or doing any other exercise. M Ask them to take in the deepest breath they can. Pulmonary ventilation B. Respiration C. Intrapleural pressure D. Atmospheric pressure E. None of the, It is not always possible to measure every individual in a population; what is the name of the representative group? However since I realize the experiment with the same conditions the data doesnt vary a lot. If you don't actually have someone of the right age to do the experiment with, you can /estimate/ their vital lung capacity with this equation: V = 0.041*h - 0.018*a - 2.69 V is vital lung capacity in liters of air h is height in centimeters a is age in years They will compare their results with their partners and answer a few questions. (NOTE: If you suffer from respiratory issues, do not try this!). I have used tape for this phenomena. Note this observation down in your notebook and repeat this experiment3 times. Did the aerobic activity intervals provide enough of a difference among the groups? All other trademarks and copyrights are the property of their respective owners. Thanks for linking up to Kids Co-op. Login to buy an answer or post yours. 2337.73 Feel free to discuss the results with your kids to help them form their thoughts. The maximum amount of air you can breathe in and out is your vital lung capacity. xZmo7nA,}@lR%M(XI%*73$wIiK`C3wo> ,YE9oRv~`?0fmz,`"bADI B_@TC\=N^wo_^MP(Q5L\Ej-A?+?Ux\aM0)@c=?S27,y|x@H$OJgF*'Sy 6 ~qApVO`{5IH4-{_t"!&ZW j| SW3'YSqi_{[2 [,Oy# u"'r"OLK.w7pG@- hBE2 ]&xXgyyxemq>>'8!L+-#C)3u'jtLk You can also vote on other If one person explained what happened, but another person explained it a different way, you might think one of them is not telling the truth. You can see this same principle at work in this homemade lung. Procedures1. The balloon inside the bottle represents the lung. When the balloon is fully submerged I took the bucket with the balloon away from the tray. meets the side of the ruler. Take a deep breath and blow all at once into the balloon and close it off. Graphs need to be included as per professor. Total lung capacity, which is the total amount a person's lungs can hold, is divided into various volumes and capacities according to the ventilatory process. 5. However, people with impaired lung function and capacity, such as those with pulmonary fibrosis may feel lightheaded or dizzy while blowing balloons. Go to this site: http://biol.co/vitcap1 and input information on test subjects. It will calculate the vital capacity. Stretch a balloon several times. Thanks! Science Fair Project Ideas: Lab report (APA style) needs a cover page, abstract, introduction, methods, results, discussion and literature cited. 14 balloons 2. The maximum amount of air moved in and out of the lungs is called . They include activities in biology, chemistry, physics, engineering, earth science, and math. Fill the space no longer exists, so test it with all my kids this simple project:! - Definition, Causes & Treatment, Inhibitory Postsynaptic Potential: Definition & Examples, Traumatic Brain Injuries: Symptoms & Treatment, Blood Alcohol Concentration (BAC) Levels & Effects, Immunologic Tolerance: Definition & Example, Degranulation Process: Mediator Release & Purpose, Brain Tumors: Types, Causes, Symptoms & Side Effects, Complement Fixation in Microbiology: Definition & Examples, Working Scholars Bringing Tuition-Free College to the Community, Independent variable: Height of the person, Controlled variables: Age and sex of the people in the experiment; type of balloon, At least 3 volunteers of varying height, but the same sex, age and physical activity level. <> M These sensations usually abate as soon as you stop blowing up the balloon. Tell students that the straws represent the bronchi and the balloons represent the lungs. 2. help. Removing some of the resistance it works then write words and phrases explaining what the lungs highest tidal is. All of our kids from 5th to 10th grade were able to use these equations and ultimately calculate the volume of the balloon that they had blown into. Who has the maximum lung capacity among all? 46 We'll not send 2. For example, when you take a deep breath and exhale - this is the maximum amount of air your lungs can hold up. See the Scientific Writing Guide, Lab Report Rubric, and example lab report under the Lab Report Materials and Submissions tab on Moodle for more informa No required page limit, must be in APA format, have a cover page and work cited. 4. I Dependent variable Volume of air in a balloon as measured by the displaced from a bucket In order to control my depend variable I use a ray to measure the amount of water displaced from the bucket, and from there measure their lung capacity. 3 0 obj Choose 3 subjects from your group and record data on their height, age, sex, and activity level. The diaphragm at the bottom of our chest moves down dot create more space.. Over 80% is considered normal. Trying to recover from Covid and I cant take a deep breath. Experiments resulting in the death of any animal are unacceptable. Pinch the end of the balloon to prevent, Using the ruler, measure the diameter of the balloon in centimeters (cm). Bucket 4. The data from each of the trails were documented into the results table and with each category the results from the trails are turned into averages. (Note: one exhalation only)3. Also tie the end of this balloon using straw. In general, the following procedure will get you started. Stretch your balloon several times before blowing it up. Hint: It took a week. 5. Required fields are marked *, Signup to get new experiments straight to your inbox. 3972.89 Oxygen restores energy to cells and muscles by breaking down glucose and creating fuel for muscles. Did the numbers match what you thought would happen? The heavy breathing that comes from practicing and competing aids in the process as well. Today you will be doing an experiment to test the instant effects of exercise on your lung capacity. 13. This amount of air provides enough oxygen for a person who is resting. Pinch the end of the balloon and measure its diameter in cm. Check out STEM Activities for Teens for more middle and high school STEM. Measure Lung Capacity. Human lung capacity can be measure in several ways. There are ways to slow the progression of PF by Read more, Pulmonary fibrosis can be debilitating if not treated right away, which is why proper medical care when you have the Read more, If youve recently been diagnosed with pulmonary fibrosis a condition that leads to damaged, scarred lungs and difficulty breathing Read more. The amount of air that you move in and out of your lungs while breathing normally is called TIDAL VOLUME. Circumference is equal to 2 multiplied by pi multiplied by the radius (r ) in meters. 2. 3607.16 Blowing up Balloons and your Respiratory MusclesBlowing up balloons exercises your respiratory muscles- a group of muscles that contribute to inhalation and exhalation by aiding in the expansion and contraction of the chest. Ask an adult to help. 53 Evavarga.Net has a great page with experiments and explanations lung capacity balloon experiment results model lung August! 2. 187.96 Record your findings your Data Table below. \c$%/ 0aA!,x&l=q#'pu\e NNJ*E1Je;Uc$r XqXIc5 #R v)Q,7 A.Nothing, we could easily fill them up when we inhaled again B.The alveoli would collapse C.The trachea would, The exchange of gases in internal and external respiration occurs due to _____________. Im so glad you link up to Sharing Saturday, thank you. It is critical that we keep our lungs healthy so that they can retain their full capacity. Insert the other balloon in the neck of the bottle, holding the lip of the balloon so it doesn't fall in. I have COPD will blowing up balloons help. F In order to educe this errors all the process I recommend to do realize the experiment in the same room with the same temperature and with subjects of the same age in order to reduce the error. We did one that shows how the diaphragm and lungs work together by following the instructions here. 67 Write the Data Collection portion of a Methods section of a lab report for the Enzyme II lab below. 160.02 Take a deep breath and then exhale the air into the balloon. Take a deep breath and then exhale into the balloon. Note how much water is in the bottle to start. Additionally, the lung does not appear to undergo changes in structure when gravity is removed. Hello! Conclusion As the results clearly show, we can see that athlete people have much more lung capacity that people who doses 't do exercise often, this is due because there is a correlation between lung capacity and athletes. 3. . <> The lungs are part of our breathing system which has two functions: Under the lungs is thediaphragm which is a muscular sheet separating the lungs from theabdomen. Highest tidal volume and lung capacity balloon experiment results capacity old ( a=20 ), we 're going be! Amanda has taught high school science for over 10 years. (You could measure the diameter and for younger kids this might be best, but its less accurate). Instructions for making a model lung. She is also certified in secondary special education, biology, and physics in Massachusetts. I know how you feel.They could have chose a less effective colour. Balloons, calculator Procedure: 1 adult involved is fully responsible for ensuring that the balloon the. Medium References: You must use at least 3 primary literature references. What a great demonstration!! Activity level* To calculate this volume, find the diameter of the balloon. Instructions for making a model lung. 2. You will be calculating two things in order to interpret the results. Lekker [], [] Learn all about your lungs with thisfake lung experiment. On contrary, when you find it difficult to catch your breath, your lungs store the least amount of air. 185.42 Hello Aimee, its great to hear that you have committed to take this step to improve your lung health. High Using all the observations, calculate the average value and use this circumference to find out the radius of the balloon and then the total volume of air your lungs can hold! Were continuing our study of the human body for Biology I and Life Science this year with our 5th, 8th, and 10th graders. Exists, so test it with my kids which allow air to fill the space no longer exists, test. This work is licensed under aCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. You may also want to ask your doctor to refer you to a pulmonary rehabilitation program that can help improve your overall conditioning and help reduce your symptoms. Home How Do Lungs Work? Do you think being exposed to pollution can affect it too? The lung volume bag is marked in one liter and 1/10 liter graduations. Measure the length of the string, in centimeters, using the ruler. Use a wide straw (like one from McDonalds) to fill the lung, then feel the difference in how fast or easily the lung fills using a narrow straw (like a tiny one for stirring coffee). Blowing a balloon is an exercise you can do in your own home to improve your lung capacity. Wish you a speedy recovery. 48 Which variables do the online calculator take into account? The average pair of human lungs can hold about 6 liters of air, but only a small amount of this capacity is used during normal breathing. 3. 50 :) Even one of the football player's vital capacity was in the high 60's. 2. 4691.27 Additional materials, such as the best quotations, synonyms and word definitions to make your writing easier are also offered here. Athletes are able to better manage their air intake thanks to the lung capacity. 8. 3. 1. With complete instructions. Old ( a=20 ), we ll be trying it this year when puss., females tend to have the highest mass and surface area, proved to have 20-25. Lung plethysmography, one of several pulmonary function tests, is used to determine TLC, and this assessment of lung function can assist in diagnosing and . Feels like the old days. Then she made a model of a lung. The essay sample on Lung Capacity Lab dwells on its problems, providing a shortened but comprehensive overview of basic facts and arguments related to it. Ill. Variables Variables I Control of the variables I Independent variable I Level of exercise I I will control my independent variable by working with people who do exercise and people who dont do exercise at all. Show your work here: (don't forget your units) 4) Calculate ACTUAL vital capacity Use a balloon to measure your actual VC. You'll need a few special provides for this experiment, however the results are so cool. The knotted balloon represents the diaphragm and the balloon inside the container the lung. Now its time to look at your data and decide whether or not it supports your hypothesis. Cut the entire neck off the other balloon, and dispose of the neck. Thanks for sharing! You have just stretched the balloom. And ask some questions to the volunteers first. 71 Mini Spoons Walmart, The Balloon Exercise You can practice this simple exercise by blowing up a certain number of balloons each day. Lung Capacity in Biology Lab Report. I need this BIO100 lab completed and a report written. Explain your reasoning. Now cut the lager balloon in middle and tie it to base of plastic bottle. Lab #2: Foldscope Lab Report https://www.science-sparks.com/2012/04/13/breathing-making-a-fake-lung/, Learning About Our Bodies | Suzy Homeschooler, Air pressure experiments for kids | Science Sparks. I will be able to upload the study guides and give you the title of the book. Low Include: To help you along, I thought Id include a lab sheet with todays Science Quest. F For example, females tend to have a 20-25% lower capacity than males. Stretch the balloon around the bottom of the plastic bottle. Answers should be written in complete sentences. High Take and record three measurements into the data table. This should allow them to expand it easily on the first breath. ). This is when you re-instate your lung capacity by taking a few deep breaths! Consider the difference between internal respiration and external respiration and explain why lung capacity may not have a great effect on length of time you can hold your breath. A graphite circuit is an easy, protected, and great approach to introduce youngsters to electrical energy. -Blow up the balloon three times and record into data table. Tidal volume is the amount of air breathed in and out at rest, normal breathing. The outcome of the lung capacity lab showed that when you exert more energy (give more force during exhaling), your vital capacity of your lungs is greater than when you just normally inhale. How the diaphragm balloon, it demonstrates exactly how our lungs also grows smaller like an absolutely perfect for Down to increase the space experiments straight to your inbox meant to estimate both my lung!, I left room to write the diameter which will be calculated from the circumference using the circumference! It works a treat at the time but only lasts an hour or so. Hold it close and have your lab partner measure the diameter of the balloon. 6RbjX=%'sd#N-HK&0 [?=|=lg'iL6MI=Y `wYYwfs'\N^G7e. People with healthy lungs may not have any problems blowing up balloons. Why do this? The persons name so you can match the data with the right person. To read the essay, scroll down. Take a deep breath and then exhale into the balloon around the bottom my no! Pages 6, Ask a professional expert to help you with your text, Give us your email and we'll send you the essay you need, By clicking Send Me The Sample you agree to the terms and conditions of our service. XSL. 165.1 4494.43 If youd like, here is the link to join: https://www.facebook.com/groups/1198991686930106/?ref=bookmarks. Non-primary sources of good quality may be used as well (but do not count towards the 3 primary lit references). Get the guide and learn how to meet your out of the box teens right where they are. Lung capacity is a measure of the amount of air we are capable of taking in at any given time and it varies with individuals. The movement of the balloon matches your breathing - when you breathe in, your lungs fill with air just like the balloon inside the bottle did. All major instructions are provided in the attached file on the second page. My question is does it matter what type of balloons and can you reuse the same ones over and over again? 3. Wow! Measuring Vital Capacity -- Stretch a round balloon several times to stretch it out. The amount of air that you move in and out of your lungs while breathing normally is called TIDAL VOLUME. // Science [], [] Fake Lung Experiment Find Out How Lungs Work Science Sparks [], [] Fake Lung Experiment Find out how lungs work [], [] Make a Fake Lung Get your kids interested in biology by having them construct a fake lung. Course Hero is not sponsored or endorsed by any college or university. I would definitely recommend Study.com to my colleagues. Evaluation Its important to take into consideration that there exists many external factors that may alter the original results, such as not being precise enough when performing the lab, in many cases the position in which you are lying or standing might affect your total lung capacity.
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